The Grove - Light & Gesture & Color & proximity sensor is TMG39931 based product, which features advanced Gesture detection, Proximity detection, Digital Ambient Light Sense(ALS), Color Sense(RGBC), and optical pattern generation/transmission for broadcast. This four-in-one sensor allows you to collect the data from ambient environmet and ntransfers over the I2C bus. 

 

Feature

• Single device integrated optical solution
• Ambient light sensing
• UV and IR blocking filters
• Complex gesture sensing
• Ideal for operation behind dark glass - High sensitivity
• Proximity detection
• Barcode pattern generation and transmission
• Dual use of a single internal LED
• Trimmed to provide consistent reading 

 

Typical applications

• Gesture Detection
• Color Sense
• Ambient Light Sensing
• Cell Phone Touch Screen Disable
• Mechanical Switch Replacement
• Printed Bar Code Emulation 

 

Working Principle

Gesture Detection

Gesture detection utilizes four directional photodiodes to sense reflected IR energy (sourced by the integrated LED) to convert physical motion information to a digital information.

Proximity Detection

The proximity detection features provides object detection by photodiode detection of reflected IR energy(Sourced by the integrated LED).

Digital Ambient Light Sense & Color Sense

The Color and ALS detection feature provides red, green, blue and clear light intensity data. Each of the R, G, B, C channels have a UV and IR blocking filter and a dedicated data converter producing16-bit data simultaneously. This architecture allows applications to accurately measure ambient light and sense color which enables devices to calculate illuminance and color temperature, control display backlight, and chromaticity.